/* roulang page: index */
:root {
            --pg-primary: #2c3e50;
            --pg-secondary: #FF7A59;
            --pg-light: #f8f9fa;
            --pg-dark: #333;
            --pg-gray: #666;
            --pg-border: #e9ecef;
            --pg-radius: 0.75rem;
            --pg-btn-radius: 0.5rem;
            --pg-shadow: 0 10px引资us: 0;
            padding: 0;
        }
        * {
            box-sizing: border-box;
        }
        body {
            font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            font-size: 1rem;
            line-height: 1.6;
            color: var(--pg-dark);
            background-color: var(--pg-light);
            margin: 0;
        }
        a {
            color: var(--pg-primary);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: var(--pg-secondary);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .container-custom {
            width: 100%;
            max-width: 1200px;
            padding-right: 1.5rem;
            padding-left: 1.5rem;
            margin-right: auto;
            margin-left: auto;
        }
        /* 导航 */
        .navbar-custom {
            background-color: transparent;
            padding-top:16px;
            padding-bottom:16px;
            transition: background-color 0.3s ease, box-shadow 0.3s ease;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1030;
        }
        .navbar-custom.scrolled {
            background-color: white;
            box-shadow: var(--pg-shadow);
        }
        .navbar-brand-custom {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--pg-primary);
            display: flex;
            align-items: center;
        }
        .navbar-brand-custom span {
            background: linear-gradient(to right, var(--pg-primary), var(--pg-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-link-custom {
            font-weight: 500;
            color: var(--pg-primary);
            margin: 0 0.75rem;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-link-custom:hover, .nav-link-custom.active {
            color: var(--pg-secondary);
        }
        .nav-link-custom.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: panel .nav-link-custom {
                font-weight: 500;
                color: var(--pg-primary);
                margin: 0 0.75rem;
                padding: 0.5rem 0;
                position: relative;
            }
            .nav-link-custom:hover, .nav-link-custom.active {
                color: var(--pg-secondary);
            }
            .nav-link-custom.active::after {
                content: '';
                position: absolute;
                bottom: 0;
                left: 0;
                width: 100%;
                height: 2px;
                background-color: var(--pg-secondary);
                border-radius: 1px;
            }
        }
        .btn-primary-custom {
            background-color: var(--pg-secondary);
            border: none;
            color: white;
            border-radius: var(--pg-btn-radius);
            padding: 0.75rem 1.75rem;
            font-weight: 600;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .btn-primary-custom:hover {
            background-color: #e06a4a;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 122, 89, 0.3);
        }
        .btn-primary-custom:focus {
            outline: 2px solid var(--pg-primary);
            outline-offset: 2px;
        }
        /* Hero */
        .hero-section {
            min-height: 100vh;
            display: flex;
            align-items: center;
            background-color: var(--pg-light);
            padding-top: 90px;
            overflow: hidden;
        }
        .hero-content {
            padding-right: 3rem;
        }
        .hero-visual {
            position: relative;
            height: 80vh;
            border-radius: var(--pg-radius);
            overflow: hidden;
            box-shadow: var(--pg-shadow);
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            animation: float 6s ease-in-out infinite;
        }
        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-20px); }
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 700;
            color: var(--pg-primary);
            line-height: 1.2;
            margin-bottom: 1.5rem;
        }
        .hero-description {
            font-size: 1.25rem;
            color: var(--pg-gray);
            margin-bottom: 2.5rem;
            max-width: 90%;
        }
        /* 板块通用 */
        .section-block {
            padding-top: 5rem;
            padding-bottom: 5rem;
        }
        .section-title {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--pg-primary);
            text-align: center;
            margin-bottom: 3rem;
            position: relative;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -1rem;
            left: 50%;
            transform: translateX(-50%);
            width:每月rem;
            height: 4px;
            background-color: var(--pg-secondary);
            border-radius: 2px;
        }
        /* 服务展示 */
        .service-card {
            background-color: white;
            border-radius: var(--pg-radius);
            padding: 2.5rem;
            box-shadow: var(--pg-shadow);
            height: 100%;
            transition: transform 0.3s ease;
            border-top: 4px solid var(--pg-secondary);
        }
        .service-card:hover {
            transform: translateY(-10px);
        }
        .service-icon {
            font-size: 2.5rem;
            color: var(--pg-secondary);
            margin-bottom: 1.5rem;
        }
        .service-title {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--pg-primary);
            margin-bottom: 1rem;
        }
        .service-desc {
            color: var(--pg-gray);
            margin-bottom: 1.5rem;
        }
        /* 优势/数据 */
        .stats-block {
            background-color: var(--pg-primary);
            color: white;
            border-radius: var(--pg-radius);
            padding: 4rem 2rem;
        }
        .stat-number {
            font-size: 3.5rem;
            font-weight: 700;
            color: var(--pg-secondary);
        }
        .stat-label {
            font-size: 1.25rem;
            color: rgba(255,255,255,0.9);
            margin-top: 0.5rem;
        }
        /* 案例研究 */
        .case-card {
            border-radius: var(--pg-radius);
            overflow: hidden;
            box-shadow: var(--pg-shadow);
            background-color: white;
        }
        .case-img {
            height: 250px;
            width: 100%;
            object-fit: cover;
        }
        .case-content {
            padding: 2rem;
        }
        .case-tag {
            display: inline-block;
            background-color: var(--pg-light);
            color: var(--pg-gray);
            padding: 0.25rem 0.75rem;
            border-radius: 1rem;
            font-size: 0.875rem;
            margin-bottom: 1rem;
        }
        .case-title {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--pg-primary);
            margin-bottom: 1rem;
        }
        /* 解决方案 */
        .solution-item {
            background-color: white;
            border-radius: var(--pg-radius);
            padding: 2rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 5px 15px rgba(44, 62, 80, 0.05);
            border-left: 4px solid var(--pg-primary);
            transition: border-left-color 0.3s ease;
        }
        .solution-item:hover {
            border-left-color: var(--pg-secondary);
        }
        .solution-step {
            font-weight: 600;
            color: var(--pg-secondary);
            font-size: 0.875rem;
            margin-bottom: 0.5rem;
        }
        /* FAQ */
        .accordion-custom .accordion-item {
            border: none;
            border-radius: var(--pg-radius);
            margin-bottom: 1rem;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .accordion-custom .accordion-button {
            background-color: var(--pg-light);
            color: var(--pg-primary);
            font-weight: 600;
            border: none;
            border-radius: var(--pg-radius);
            padding: 1.25rem 1.5rem;
            box-shadow: none;
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background-color: white;
            color: var(--pg-secondary);
        }
        .accordion-custom .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232c3e50'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23FF7A59'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
        }
        .accordion-custom .accordion-body {
            padding: 1.5rem;
            color: var(--pg-gray);
            background-color: white;
        }
        /* 联系表单 */
        .contact-form {
            background-color: white;
            border-radius: var(--pg-radius);
            padding: 3rem;
            box-shadow: var(--pg-shadow);
        }
        .form-control-custom {
            border: 1px solid var(--pg-border);
            border-radius: var(--pg-btn-radius);
            padding: 0.75rem 1rem;
            font-size: 1rem;
            transition: border 0.3s ease, box-shadow 0.3s ease;
        }
        .form-control-custom:focus {
            border-color: var(--pg-primary);
            box-shadow: 0 0 0 0.25rem rgba(44, 62, 80, 0.15);
            outline: 0;
        }
        /* 页脚 */
        .footer-custom {
            background-color: var(--pg-primary);
            color: rgba(255,255,255,0.8);
            padding-top: 4rem;
            padding-bottom: 2rem;
        }
        .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: white;
            margin-bottom: 1.5rem;
        }
        .footer-desc {
            color: rgba(255,255,255,0.7);
            max-width: 300px;
        }
        .footer-links h5 {
            color: white;
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
        }
        .footer-links a {
            color: rgba(255,255,255,0.7);
            display: block;
            margin-bottom: 0.75rem;
        }
        .footer-links a:hover {
            color: var(--pg-secondary);
        }
        .footer-divider {
            border-top: 1px solid rgba(255,255,255,0.1);
            margin-top:建有0rem;
            margin-bottom: 2rem;
        }
        .copyright {
            color: rgba(255,255,255,0.6);
            font-size: 0.875rem;
        }
        /* 响应式 */
        @media (max-width: 992px) {
            .navbar-nav {
                background-color: white;
                padding: 1.5rem;
                border-radius: var(--pg-radius);
                box-shadow: var(--pg-shadow);
                margin-top: 1rem;
            }
            .hero-title {
                font-size: 2.75rem;
            }
            .hero-content {
                padding-right: 0;
            }
            .hero-visual {
                height: 50vh;
                margin-top: 3rem;
            }
        }
        @media (max-width: 768px) {
            .hero-section {
                flex-direction: column;
                text-align: center;
            }
            .hero-title {
                font-size: 2.25rem;
            }
            .hero-description {
                max-width: 100%;
            }
            .section-block {
                padding-top: 3rem;
                padding-bottom: 3rem;
            }
            .section-title {
                font-size: 2rem;
            }
            .contact-form {
                padding: 2rem;
            }
        }
        @media (max-width: 576px) {
            .container-custom {
                padding-right: 1rem;
                padding-left: 1rem;
            }
            .btn-primary-custom {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category1 */
:root {
        --primary-color: #2c3e50;
        --secondary-color: #FF7A59;
        --background-color: #f8f9fa;
        --text-dark: #333;
        --text-medium: #666;
        --text-light: #888;
        --border-color: #eaeaea;
        --border-radius: 0.75rem;
        --border-radius-sm: 0.5rem;
        --shadow: 0 10px 30px rgba(44, 62, 80, 0.08);
        --shadow-hover: 0 15px 40px rgba(44, 62, 80, 0.15);
        --spacing-section: 5rem;
        --spacing-element: 1.5rem;
    }
    
    /* 覆盖 Bootstrap 变量 */
    :root {
        --bs-primary: var(--secondary-color);
        --bs-border-radius: var(--border-radius-sm);
        --bs-border-radius-lg: var(--border-radius);
    }
    
    * {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    
    body {
        font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
        line-height: 1.6;
        color: var(--text-dark);
        background-color: var(--background-color);
        overflow-x: hidden;
    }
    
    .container-custom {
        width: 100%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 var(--spacing-element);
    }
    
    /* 导航栏样式 */
    .navbar-custom {
        height: 70px;
        background: transparent;
        transition: all 0.3s ease;
        padding: 0;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
    }
    
    .navbar-custom.scrolled {
        background: white;
        box-shadow: var(--shadow);
    }
    
    .navbar-brand-custom {
        font-size: 1.8rem;
        font-weight: 700;
        color: var(--primary-color);
        text-decoration: none;
        display: flex;
        align-items: center;
    }
    
    .navbar-brand-custom span {
        background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    
    .nav-link-custom {
        color: var(--text-dark) !important;
        font-weight: 500;
        padding: 0.5rem 1.2rem !important;
        margin: 0 0.2rem;
        border-radius: var(--border-radius-sm);
        transition: all 0.2s ease;
    }
    
    .nav-link-custom:hover,
    .nav-link-custom.active {
        color: var(--secondary-color) !important;
        background-color: rgba(255, 122, 89, 0.1);
    }
    
    .nav-link-custom.active {
        font-weight: 600;
    }
    
    .navbar-toggler {
        border: none;
        padding: 0.5rem;
    }
    
    .navbar-toggler:focus {
        box-shadow: 0 0 0 2px var(--secondary-color);
    }
    
    .navbar-toggler-icon {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2844, 62, 80, 0.8%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }
    
    .btn-primary-custom {
        background-color: var(--secondary-color);
        color: white;
        border: none;
        padding: 0.75rem 2rem;
        border-radius: var(--border-radius-sm);
        font-weight: 600;
        transition: all 0.3s ease;
        text-decoration: none;
        display: inline-block;
    }
    
    .btn-primary-custom:hover {
        background-color: #e06a4a;
        transform: translateY(-2px);
        box-shadow: var(--shadow-hover);
        color: white;
    }
    
    .btn-primary-custom:focus {
        outline: none;
        box-shadow: 0 0 0 3px rgba(255, 122, 89, 0.3);
    }
    
    /* 分类页 Hero */
    .category-hero {
        padding-top: 100px;
        padding-bottom: var(--spacing-section);
        background: linear-gradient(135deg, rgba(44, 62, 80, 0.05) 0%, rgba(255, 122, 89, 0.05) 100%);
        min-height: 60vh;
        display: flex;
        align-items: center;
    }
    
    .category-hero h1 {
        font-size: 2.8rem;
        font-weight: 700;
        color: var(--primary-color);
        margin-bottom: 1.5rem;
        line-height: 1.2;
    }
    
    .category-hero .lead {
        font-size: 1.25rem;
        color: var(--text-medium);
        margin-bottom: 2rem;
        max-width: 700px;
    }
    
    .hero-badge {
        display: inline-block;
        background-color: var(--secondary-color);
        color: white;
        padding: 0.5rem 1.2rem;
        border-radius: 2rem;
        font-size: 0.9rem;
        font-weight: 600;
        margin-bottom: 1.5rem;
    }
    
    /* 内容区块通用样式 */
    .section {
        padding: var(--spacing-section) 0;
    }
    
    .section-title {
        font-size: 2rem;
        font-weight: 700;
        color: var(--primary-color);
        margin-bottom: 3rem;
        text-align: center;
        position: relative;
    }
    
    .section-title:after {
        content: '';
        position: absolute;
        bottom: -0.75rem;
        left: 50%;
        transform: translateX(-50%);
        width: 80px;
        height: 4px;
        background-color: var(--secondary-color);
        border-radius: 2px;
    }
    
    /* 图文介绍区块 */
    .feature-img {
        border-radius: var(--border-radius);
        overflow: hidden;
        box-shadow: var(--shadow);
        height: 100%;
        min-height: 400px;
        object-fit: cover;
    }
    
    .feature-content h3 {
        font-size: 1.8rem;
        font-weight: 700;
        color: var(--primary-color);
        margin-bottom: 1.5rem;
    }
    
    .feature-content p {
        font-size: 1.1rem;
        color: var(--text-medium);
        margin-bottom: 1.5rem;
        line-height: 1.8;
    }
    
    .feature-list {
        list-style: none;
        padding: 0;
        margin: 2rem 0;
    }
    
    .feature-list li {
        padding: 0.8rem 0;
        padding-left: 2rem;
        position: relative;
        color: var(--text-medium);
    }
    
    .feature-list li:before {
        content: "✓";
        position: absolute;
        left: 0;
        color: var(--secondary-color);
        font-weight: bold;
    }
    
    /* 服务特性卡片 */
    .service-card {
        background: white;
        border-radius: var(--border-radius);
        padding: 2.5rem;
        height: 100%;
        box-shadow: var(--shadow);
        transition: all 0.3s ease;
        border-top: 4px solid transparent;
    }
    
    .service-card:hover {
        transform: translateY(-10px);
        box-shadow: var(--shadow-hover);
        border-top-color: var(--secondary-color);
    }
    
    .service-icon {
        width: 70px;
        height: 70px;
        background: linear-gradient(135deg, rgba(44, 62, 80, 0.1) 0%, rgba(255, 122, 89, 0.1) 100%);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 1.5rem;
    }
    
    .service-icon i {
        font-size: 1.8rem;
        color: var(--secondary-color);
    }
    
    .service-card h4 {
        font-size: 1.4rem;
        font-weight: 700;
        color: var(--primary-color);
        margin-bottom: 1rem;
    }
    
    .service-card p {
        color: var(--text-medium);
        margin-bottom: 1.5rem;
    }
    
    /* 稳定指标展示 */
    .stats-section {
        background: linear-gradient(135deg, var(--primary-color) 0%, #1a2530 100%);
        color: white;
        padding: var(--spacing-section) 0;
    }
    
    .stats-section .section-title {
        color: white;
    }
    
    .stats-section .section-title:after {
        background-color: var(--secondary-color);
    }
    
    .stat-box {
        text-align: center;
        padding: 2rem;
    }
    
    .stat-number {
        font-size: 3.5rem;
        font-weight: 800;
        color: var(--secondary-color);
        margin-bottom: 0.5rem;
        line-height: 1;
    }
    
    .stat-label {
        font-size: 1.2rem;
        color: rgba(255, 255, 255, 0.9);
        font-weight: 500;
    }
    
    /* 实施流程 */
    .process-step {
        position: relative;
        padding-left: 3rem;
        margin-bottom: 3rem;
    }
    
    .process-step:last-child {
        margin-bottom: 0;
    }
    
    .step-number {
        position: absolute;
        left: 0;
        top: 0;
        width: 2.5rem;
        height: 2.5rem;
        background-color: var(--secondary-color);
        color: white;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 700;
        font-size: 1.1rem;
    }
    
    .process-step h4 {
        font-size: 1.4rem;
        font-weight: 700;
        color: var(--primary-color);
        margin-bottom: 0.8rem;
    }
    
    .process-step p {
        color: var(--text-medium);
        margin-bottom: 0;
    }
    
    /* CTA区域 */
    .cta-section {
        background: linear-gradient(135deg, rgba(44, 62, 80, 0.05) 0%, rgba(255, 122, 89, 0.05) 100%);
        padding: var(--spacing-section) 0;
        text-align: center;
    }
    
    .cta-section h2 {
        font-size: 2.2rem;
        font-weight: 700;
        color: var(--primary-color);
        margin-bottom: 1.5rem;
    }
    
    .cta-section p {
        font-size: 1.2rem;
        color: var(--text-medium);
        max-width: 700px;
        margin: 0 auto 3rem;
    }
    
    /* 页脚样式 */
    .footer-custom {
        background-color: var(--primary-color);
        color: rgba(255, 255, 255, 0.8);
        padding: var(--spacing-section) 0 2rem;
    }
    
    .footer-brand {
        font-size: 1.8rem;
        font-weight: 700;
        color: white;
        margin-bottom: 1.5rem;
    }
    
    .footer-desc {
        color: rgba(255, 255, 255, 0.7);
        line-height: 1.7;
        margin-bottom: 1.5rem;
    }
    
    .footer-links h5 {
        color: white;
        font-size: 1.2rem;
        font-weight: 600;
        margin-bottom: 1.5rem;
    }
    
    .footer-links a {
        display: block;
        color: rgba(255, 255, 255, 0.7);
        text-decoration: none;
        margin-bottom: 0.8rem;
        transition: all 0.2s ease;
    }
    
    .footer-links a:hover {
        color: var(--secondary-color);
        padding-left: 5px;
    }
    
    .footer-links p {
        margin-bottom: 0.8rem;
        color: rgba(255, 255, 255, 0.7);
    }
    
    .footer-links i {
        color: var(--secondary-color);
        width: 20px;
    }
    
    .footer-divider {
        height: 1px;
        background-color: rgba(255, 255, 255, 0.1);
        margin: 3rem 0 2rem;
    }
    
    .copyright {
        color: rgba(255, 255, 255, 0.6);
        font-size: 0.9rem;
    }
    
    /* 响应式设计 */
    @media (max-width: 992px) {
        .navbar-collapse {
            background: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin-top: 1rem;
        }
        
        .nav-link-custom {
            padding: 0.8rem 0 !important;
            margin: 0;
        }
        
        .category-hero h1 {
            font-size: 2.2rem;
        }
        
        .section-title {
            font-size: 1.8rem;
        }
    }
    
    @media (max-width: 768px) {
        :root {
            --spacing-section: 3rem;
        }
        
        .category-hero {
            padding-top: 120px;
            padding-bottom: 3rem;
        }
        
        .category-hero h1 {
            font-size: 1.8rem;
        }
        
        .category-hero .lead {
            font-size: 1.1rem;
        }
        
        .feature-img {
            min-height: 300px;
            margin-bottom: 2rem;
        }
        
        .stat-number {
            font-size:2.5rem;
        }
        
        .service-card {
            padding: 2rem 1.5rem;
        }
        
        .cta-section h2 {
            font-size: 1.8rem;
        }
    }
    
    @media (max-width: 576px) {
        .container-custom {
            padding: 0 1rem;
        }
        
        .category-hero h1 {
            font-size: 1.6rem;
        }
        
        .section-title {
            font-size: 1.5rem;
            margin-bottom: 2rem;
        }
    }